High-quality polystyrene plastic or borosilicate glass, offering durability and clarity for culture growth observation. Available in various standard sizes such as 35 mm, 60 mm, 90 mm, 100 mm, and 150 mm for versatile lab use.Loose-fitting lid to allow gas exchange while preventing contamination, maintaining an optimal environment for microbial or cell cultures.Resistant to most acids, alkalis, and solvents, ensuring durability in various culture media environments.Material is free from harmful substances, ensuring the integrity of cell and microbial cultures.